how do I get bytecode hash of a smart contract?

Question

Below is a snippet of code I am using to compute the hashed bytecode of a contract, however this doesn't seem to work. This hash is passed to the create function of the zkSync Era ContractDeployer.sol system contract?

const contractDeployerAddress = "0x0000000000000000000000000000000000008006"
const contractDeployer = new ethers.Contract(contractDeployerAddress, abi.abi, signer);

const salt = ethers.constants.HashZero;
const bytecodeUint8Array = utils.hashBytecode(guardianStorageArtifact.deployedBytecode)
console.log(bytecodeUint8Array)
const bytecodeHash = ethers.utils.keccak256(bytecodeUint8Array)
console.log(bytecodeHash)

const createCall = await contractDeployer.create(salt, bytecodeHash, "0x", {
gasLimit: 200000
});
const receipt = await createCall.wait();
console.log('Transaction confirmed in block:', receipt.blockNumber);

Answer 1

Try this :

const contractDeployerAddress = "your address";
const contractDeployer = new ethers.Contract(contractDeployerAddress, abi.abi, signer);

const bytecode = guardianStorageArtifact.deployedBytecode;

const bytecodeHash = ethers.utils.keccak256(bytecode);

console.log('Bytecode Hash:', bytecodeHash);

const salt = ethers.utils.randomBytes(32); 

const createCall = await contractDeployer.create(salt, bytecodeHash, "0x", {
  gasLimit: 200000
});

const receipt = await createCall.wait();
console.log('Transaction confirmed in block:', receipt.blockNumber);